Comment 3 for bug 225098

The link http://linuxwireless.org/en/users/Drivers/b43#devicefirmware does not contain the file 'ucode4.fw'
Please check the link to see what it contains so your advice can be more accurate. It seems to contain only the firmware cutting tools and instructions on how to compile and run.
http://linuxwireless.org/en/users/Drivers/b43#devicefirmware/ucode
My friend will be unable to follow the instructions at this link.

Also, it doesn't look like any Ubuntu package supplies a firmware file by this name:
apt-file find ucode4.fw
yields no output.